Allow login using username or email in Laravel 5.4

Question

Now I\'ve followed the Laravel documentation on how to allow usernames during authentication, but it takes away the ability to use the email. I want to allow users to use their

Answer 1

This is the way I do it:

// get value of input from form (email or username in the same input)
 $email_or_username = $request->input('email_or_username');

 // check if $email_or_username is an email
 if(filter_var($email_or_username, FILTER_VALIDATE_EMAIL)) { // user sent his email 

    // check if user email exists in database
    $user_email = User::where('email', '=', $request->input('email_or_username'))->first();

    if ($user_email) { // email exists in database
       if (Auth::attempt(['email' => $email_or_username, 'password' => $request->input('password')])) {
          // success
       } else {
          // error password
       }
    } else {
       // error: user not found
    }

 } else { // user sent his username 

    // check if username exists in database
    $username = User::where('name', '=', $request->input('email_or_username'))->first();

    if ($username) { // username exists in database
       if (Auth::attempt(['name' => $email_or_username, 'password' => $request->input('password')])) {
          // success
       } else {
          // error password
       }
    } else {
       // error: user not found
    }
 }       

I believe there is a shorter way to do that, but for me this works and is easy to understand.